[PATCH] i386/x86-64: Emulate CPUID4 on AMD

Intel systems report the cache level data from CPUID 4 in sysfs.
Add a CPUID 4 emulation for AMD CPUs to report the same
information for them. This allows programs to read this
information in a uniform way.

The AMD way to report this is less flexible so some assumptions
are hardcoded (e.g. no L3)

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/asm-i386/processor.h b/include/asm-i386/processor.h
index 0c83cf12eec9..b796210c0f5c 100644
--- a/include/asm-i386/processor.h
+++ b/include/asm-i386/processor.h
@@ -112,6 +112,7 @@ extern char ignore_fpu_irq;
 extern void identify_cpu(struct cpuinfo_x86 *);
 extern void print_cpu_info(struct cpuinfo_x86 *);
 extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c);
+extern unsigned short num_cache_leaves;
 
 #ifdef CONFIG_X86_HT
 extern void detect_ht(struct cpuinfo_x86 *c);